10 most difficult electronics riddles A list of electronics related questions that are most often answered incorrectly Electronics quiz Which type of transmission uses the shortest waves?Satellite TV. The Ku band is the portion of the electromagnetic spectrum in the microwave range of frequencies from 12 to 18 gigahertz (GHz). Ku band is primarily used for satellite communications, most notably for fixed and broadcast services, and for specific applications such as NASA's Tracking Data Relay Satellite used for both space shuttle and International Space Station very hard 23% GSM telephonyGSM telephony15%CB radioCB radio34%VHF radioVHF radio25%satellite TVsatellite TV23%Created by: Tschuka. Statistics based on 4213 answers in 3 languages »TV riddles » John Bardeen, Walter Houser Brattain and William Bradford Shockley received the Nobel Prize in Physics in 1956 for the invention of:Transistor effect. The transistor heralded in the “Information Age” and paved the way for the development of almost every electronic device, from radios to computers to space shuttles. For their monumental “researches on semiconductors and their discovery of the transistor effect,"4 Bardeen, Shockley and Brattain were presented with the Nobel Prize in Physics in 1956.hard 44% dimmerdimmer16%resistorresistor22%optical fiberoptical fiber16%transistor effecttransistor effect44%Created by: Tschuka. Statistics based on 4471 answers in 3 languages »Nobel prize riddles » What was the name of the first commercial car radio? Motorola. In 1930, Paul and Joseph Galvin together with William Lear developed the first car radio on the dashboard and called it "Motorola". The word "Motorola" meant "sound in motion". The first part pointed to the engine, the second part was the popular suffix "ola"hard 44% RadiolaRadiola17%MotorolaMotorola44%BlaupunktBlaupunkt27%ElectrolaElectrola11%Created by: Tschuka. Statistics based on 294 answers in 2 languages »technical riddles » Which device converts electricity into acoustic energy?Headphones are a pair of small loudspeaker drivers worn on or around the head over a user's ears. They are electroacoustic transducers, which convert an electrical signal to a corresponding sound. hard 47% MicrophoneMicrophone18%HeadphoneHeadphone47%AmplifierAmplifier28%PreamplifierPreamplifier5%Created by: Tschuka. Statistics based on 7872 answers in 2 languages »physics riddles » In 1953, Samsung began producing its first product. What?Sugar. Samsung started out as a small trading company with forty employees located in Su-dong. hard 49% TelephonesTelephones10%SugarSugar49%Computer memoryComputer memory10%Integrated circuitsIntegrated circuits28%Created by: Tschuka. Statistics based on 866 answers in 2 languages »history of technics riddles » What may happen to a lead battery when overcharged?Explosion. Any lead-acid battery system when overcharged will produce hydrogen gas by electrolysis of water. If the rate of overcharge is small, the vents of each cell allow the dissipation of the gas. A severe overcharge may produce a flammable concentration of hydrogen.hard 51% acid leakacid leak24%polarization switchpolarization switch11%explosionexplosion51%sulfurizationsulfurization12%Created by: globalquiz.org. Statistics based on 27510 answers in 3 languages »electrics riddles » What technique are these parking sensors using?Echo sounding. Typical parking sensors are ultrasonic, often a clicking sound may be heard close by. There are also less popular electromagnetic sensors, that do not require any holes in the bumper, but detect metal objects only.hard 52% radarradar13%echo soundingecho sounding52%infrared ranginginfrared ranging23%electromagnetic inductionelectromagnetic induction10%Created by: globalquiz.org. Statistics based on 21200 answers in 2 languages »cars riddles » What does HTC stand for in the HTC Corporation name?High Tech Computer. HTC was founded in 1997 as a manufacturer of notebook computers. The company changed name to HTC and doesn't use "High Tech Computer" name any more. However, some HTC smartphones are still visible as "High Tech Computer" devices when plugged into PC. hard 52% High Tech ComputerHigh Tech Computer52%Hanoi Telephone CommunicationHanoi Telephone Communication34%Hybrid Telephone CasingHybrid Telephone Casing10%High Temperature CoolingHigh Temperature Cooling2%Created by: globalquiz.org. Statistics based on 13594 answers in 3 languages »logo riddles » What material is computer's processor made of?Single crystal silicon is used in the fabrication of semiconductors. On the quantum scale that microprocessors operate on, the presence of grain boundaries would have a significant impact on the functionality of field effect transistors by altering local electrical properties. Therefore, microprocessor fabricators have invested heavily in facilities to produce large single crystals of silicon.hard 52% single crystal rubysingle crystal ruby4%single crystal siliconsingle crystal silicon52%silicon polycrystalsilicon polycrystal35%pyrite crystalpyrite crystal8%Created by: Tschuka. Statistics based on 481 answers in 3 languages »computers riddles » Which device converts an acoustic wave into an electrical signal?Microphone. A microphone, colloquially nicknamed mic or mike is a transducer that converts sound into an electrical signal. Microphones typically need to be connected to a preamplifier before the signal can be recorded or reproduced.hard 56% HeadphonesHeadphones9%LoudspeakerLoudspeaker11%MicrophoneMicrophone56%AmplifierAmplifier23%Created by: Tschuka. Statistics based on 8386 answers in 2 languages »technology riddles » Play electronics quiz and see all the questions.